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Diffstat (limited to 'gnulib/m4/isnan.m4')
| m--------- | gnulib | 0 | ||||
| -rw-r--r-- | gnulib/m4/isnan.m4 | 44 |
2 files changed, 44 insertions, 0 deletions
diff --git a/gnulib b/gnulib deleted file mode 160000 -Subproject 443bc5ffcf7429e557f4a371b0661abe98ddbc1 diff --git a/gnulib/m4/isnan.m4 b/gnulib/m4/isnan.m4 new file mode 100644 index 0000000..a99cbb3 --- /dev/null +++ b/gnulib/m4/isnan.m4 @@ -0,0 +1,44 @@ +# isnan.m4 serial 5 +dnl Copyright (C) 2007-2011 Free Software Foundation, Inc. +dnl This file is free software; the Free Software Foundation +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. + +AC_DEFUN([gl_ISNAN], +[ + AC_REQUIRE([gl_MATH_H_DEFAULTS]) + AC_REQUIRE([gl_FUNC_ISNANF]) + AC_REQUIRE([gl_FUNC_ISNAND]) + AC_REQUIRE([gl_FUNC_ISNANL]) + + # If we replaced any of the underlying isnan* functions, replace + # the isnan macro; it undoubtedly suffers from the same flaws. + AC_MSG_CHECKING([whether isnan macro works]) + if test $gl_func_isnanf = yes \ + && test $gl_func_isnand = yes \ + && test $gl_func_isnanl = yes; then + AC_MSG_RESULT([yes]) + ISNAN_LIBM= + dnl Append $ISNANF_LIBM to ISNAN_LIBM, avoiding gratuitous duplicates. + case " $ISNAN_LIBM " in + *" $ISNANF_LIBM "*) ;; + *) ISNAN_LIBM="$ISNAN_LIBM $ISNANF_LIBM" ;; + esac + dnl Append $ISNAND_LIBM to ISNAN_LIBM, avoiding gratuitous duplicates. + case " $ISNAN_LIBM " in + *" $ISNAND_LIBM "*) ;; + *) ISNAN_LIBM="$ISNAN_LIBM $ISNAND_LIBM" ;; + esac + dnl Append $ISNANL_LIBM to ISNAN_LIBM, avoiding gratuitous duplicates. + case " $ISNAN_LIBM " in + *" $ISNANL_LIBM "*) ;; + *) ISNAN_LIBM="$ISNAN_LIBM $ISNANL_LIBM" ;; + esac + else + AC_MSG_RESULT([no]) + dnl REPLACE_ISNAN=1 also makes sure the rpl_isnan[fdl] functions get built. + REPLACE_ISNAN=1 + ISNAN_LIBM= + fi + AC_SUBST([ISNAN_LIBM]) +]) |